Dr. Laura O'Philbin:

People are diagnosed at different ages. What we do know is that for people who have dementia, their brain changes start to happen decades in advance. It is the case that for some people diagnosed with dementia it might be relatively stable while others progress quite quickly. The Alzheimer's Society in the UK says that the early stage lasts an average of two years but it really depends from person to person. When you have met one person with dementia, you have met one person with dementia so, unfortunately, it is very tricky even for planning because the people we work with are so different.